Loving everything about Rockbox on my fuze, again thank you to all the great help this forum has given me , but the time has come to upgrade the external memory to a 64bit micro card, what I would really like to know is;

1. if I can just make a straight copy of my 32bit micro card to the 64bit card and will all the playlists still work (the playlist are created via foobar as m3u8) or do I need to make new playlists again?

2. Also if I was to copy .flac files 'of the same songs' to replace the .ogg file to the new 64bit card (for example swap the same source .ogg songs with .flac) would I need to do a new playlist for the .flac files or will the present playlist created using the .ogg files work for flac? for example does the playlist need the ogg/flac file information to recognise that song or does it recognise it by just the song title etc if it is the same song but encoded to a different file format?